[The Empire of Kipchak founded after the Mongol Conquest of 1224, included
also parts of Siberia and Khwarizm; it survived nominally until
1502. - H. C.]
(Four Years of Archaeological Researches among the Ruins of Sarai [in
Russian] by M. Gregorieff [who appears to have also published a pamphlet
specially on the site, but this has not been available]; Historisch-
geographische Darstellung des Stromsystems der Wolga, von Ferd. Heinr.
Mueller, Berlin, 1839, 568-577; Ibn. Bat. II. 447; Not. et Extraits,
XIII. i. 286; Pallas, Voyages; Cathay, 231, etc.; Erdmann, Numi
Asiatici, pp. 362 seqq.; Arabs. I. p. 381.)
NOTE 2. - BOLGHAR, our author's Bolgara, was the capital of the region
sometimes called Great Bulgaria, by Abulfeda Inner Bulgaria, and stood a
few miles from the left bank of the Volga, in latitude about 54 deg. 54', and
90 miles below Kazan. The old Arab writers regarded it as nearly the limit
of the habitable world, and told wonders of the cold, the brief summer
nights, and the fossil ivory that was found in its vicinity. This was
exported, and with peltry, wax, honey, hazel-nuts, and Russia leather,
formed the staple articles of trade.